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Mini projector

  1. Mar 3, 2015 #1
    Hi

    Im just wondering how mini projectors are powered up.. Is it a dc to ac ? Or just Ac?

    Also im trying to look into a very small power supply but cant find anything as small as I want.. The smallest ive found is 13 x 5.6 x 9.7
     
  2. jcsd
  3. Mar 3, 2015 #2

    berkeman

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    Can you be more specific? What projector? Can you provide a link to a datasheet or something?
     
  4. Mar 3, 2015 #3
    Im being very general. Im trying to find out what components are being used and what the power source is like.. There are many projectors but I want to just know the basic
     
  5. Mar 3, 2015 #4

    berkeman

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    Being that general makes the question meaningless, IMO. "Projectors" range from giant movie house projectors (which are obviously AC Mains powered) to small LED-based pocket-size projectors, which are obviously powered by batteries and/or wall chargers. What is the context of your question? Is this for schoolwork?
     
  6. Mar 3, 2015 #5
    Context of mini projectors. Yeah I think your right about the batteries but how could these batterys be charged without taking them out..

    Not schoolwork. Just curios thats all
     
  7. Mar 3, 2015 #6

    berkeman

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    I did a Google Images search on LED Projector just now, and got lots of good-looking hits. Try that search, and click into the smaller projector pictures that you see. You should be able to access their datasheets via this method, to learn what their power consumption is, and how long they last on batteries without being plugged into a wall wart power supply to recharge the batteries. :smile:
     
  8. Mar 3, 2015 #7
    Thanks alot!

    I think without connecting to mains it only last an hour or two.. Wonder if its worth getting one
     
  9. Mar 3, 2015 #8

    berkeman

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    Before getting any projector, I recommend finding one in a store and trying it out there. I made the mistake of buying an inexpensive projector over the Internet for use in some trainings with 4-6 people (so it didn't have to be a big super-bright one). The optical quality turned out to be so-so but probably acceptable. But the dang fan was way loud, too loud to use in a training where you are trying to talk over the fan. I ended up having to make a sound-quieting enclosure that still allowed good airflow for it. Lesson learned!
     
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